Use aramid fiber thread as the hanging rubber compound for the belt cord of radial aviation tire

Abstract

Disclosed are tread rubber materials for making meridian aircraft tire belt layer cord threads with aramid fiber threads. The rubber materials are prepared according to a certain ratio with 1# smoke sheet rubber as main rubber materials and butadiene styrene rubber, resorcinol bonding resin, formaldehyde bonding resin, a bonding promoter AIR-201 special for the aramid fiber threads, a bonding promoter AIR-1, highly-abrasion-resistant carbon black, precipitated silica, a novel silane coupling agent, insoluble sulfur and a sulfenamide accelerator as main auxiliary materials. The rubber materials have the performance advantages that the bonding strength of the rubber materials and the aramid fiber threads is high, and the bonding retention rate after thermal ageing is high and have the performance characteristics of being high in tensile strength and tearing strength, low in compression fatigue heat generation and high in definite elongation stress. The rubber materials are used as aircraft meridian tire belt layer tread rubber, thus under the high-load and high-speed severe usage conditions, the quality problems of rubber thread loosening or delaminating of layers do not occur to the belt layer position of the aircraft tire, the rubber threads are bonded firmly, and the tire is safe to use.

Description

technical field [0001] The invention relates to a polymer material, in particular to using aramid fiber thread as a hanging rubber material for the belt layer cord of a radial aviation tire. Background technique [0002] With the improvement of aircraft technical indicators, aviation tires are developing towards high speed, high load, light weight, long life, impact resistance, puncture resistance, and safer use to meet the needs of aircraft technology development. Because aramid cords are difficult to bond with rubber, the skeleton material of the belt layer of the existing radial aviation tires does not use pure aramid cords, but nylon cords or composite cords, but the nylon cords are glued and Composite cord hanging glue cannot meet the requirements of the aircraft under high-speed transportation conditions, and it is prone to quality problems such as delamination, bulging, and tread shedding. [0003] There is no report on using aramid fiber thread as a hanging compound...

AI Technical Summary

Problems solved by technology

Because aramid cords are difficult to bond with rubber, the skeleton material of the belt layer of the existing radial aviation tires does not use pure aramid cords, but nylon cords or composite cords, but the nylon cords are glued and Composite cord hanging glue cannot meet the requirements of the aircraft under high-speed transportation conditions, and it is prone to quality problems such as delamination, bulging, and tread throwing

[0003] There is no report on the use of aramid fiber thread as a hanging compound for the belt cord of radial aircraft tires

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